Bill
#2 and #4 are short par 5's, 3 is the short 4 often used as the first hole of the Composite now with the green that slopes away and to the right (used to be 13 on the composite), 5 is the famous par 3 benched into the hill with a false front and 6 is the rollercoaster par 4 with a downhill tee shot dogleg right uphill second with a green benched into the hill.
Holes 2, 4 and 6 all have heroic characteristics, although 4 has become more strategic than heroic over time.
Holes 2 and 4 are par 4.5's and 3 is short enough to think it is a half-par as well, until you try and get your second anywhere near the pin.
#7 is an all-world short 3 up the hill, but it is not a Mackenzie hole so I left it out